#ifndef _MATH64_H
#define _MATH64_H

#include <types.h>
#include <div64.h>

static inline u64 div_u64_rem(u64 dividend, u32 divisor, u32 *remainder)
{
    *remainder = do_div(dividend, divisor);
    return dividend;
}

extern s64 div_s64_rem(s64 dividend, s32 divisor, s32 *remainder);
extern u64 div64_u64(u64 dividend, u64 divisor);
extern s64 div64_s64(s64 dividend, s64 divisor);

/**
 * div_u64 - unsigned 64bit divide with 32bit divisor
 *
 * This is the most common 64bit divide and should be used if possible,
 * as many 32bit archs can optimize this variant better than a full 64bit
 * divide.
 */
static inline u64 div_u64(u64 dividend, u32 divisor)
{
    u32 remainder;
    return div_u64_rem(dividend, divisor, &remainder);
}

/**
 * div_s64 - signed 64bit divide with 32bit divisor
 */
static inline s64 div_s64(s64 dividend, s32 divisor)
{
    s32 remainder;
    return div_s64_rem(dividend, divisor, &remainder);
}

#endif /* _MATH64_H */

